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Analysis Report RFL_PO 69002.doc
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Yara detected FormBook
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Sigma detected: Execution from Suspicious Folder
Sigma detected: Microsoft Office Product Spawning Windows Shell
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected Costura Assembly Loader
Abnormal high CPU Usage
Allocates a big amount of memory (probably used for heap spraying)
Antivirus or Machine Learning detection for unpacked file
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains capabilities to detect virtual machines
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Document contains an embedded VBA macro which executes code when the document is opened / closed
Document contains embedded VBA macros
Downloads executable code via HTTP
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Found potential string decryption / allocating functions
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Sigma detected: Non Interactive PowerShell
Sigma detected: Suspicious Bitsadmin Job via PowerShell
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
Process Tree |
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Malware Configuration |
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Threatname: FormBook |
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{"C2 list": ["www.bucksnortneola.com/gw2/"], "decoy": ["kmampc.com", "swagsoldier.com", "achochapo.com", "nestymentemaestra.com", "rakuen-beans.info", "portaldainsolvencia.com", "nationaltodaytv.com", "monadiclab.com", "thebudgetfurnituredenver.com", "sifangzhouzi.com", "quangcaosonthach.com", "cbluebeltliveshop.com", "hyperrealmarketing.com", "dallasproducecompany.com", "zizhizhengshu.com", "becosyshe.com", "injectionhub.com", "wasteshelter.com", "gapegod.com", "danfrem.com", "emag.enterprises", "insomniaut.com", "margaretsboutiquenb.com", "bestmovies4k.com", "hsxytz.com", "veles.asia", "graphicoustic.com", "rzeroxi.com", "cristyleebennett.com", "vercoicsporno.club", "awdworldwide.com", "agrilast.com", "vineyardplaceseniorliving.com", "blancaholidaylets.com", "didixun.com", "localmiller.com", "gravityphysiotherapy.com", "couchtabledesktop.com", "cypresswoodsseniorliving.com", "mmdastro.com", "opportunitybsi.com", "deejspeaks.com", "alllivesmattertojesus.info", "clippingpathmask.com", "tuoitrechuatraisudoi.site", "mipecheritage.info", "acadeopolis.com", "52jnh.com", "thetrust.place", "highseachartersct.com", "booklarge.com", "kela-de.com", "ea-it-pantomath.com", "tricountyrr.com", "blackeye.online", "hidrovaco.com", "sleeplessreconnaissance.life", "newalbanyironworks.com", "scthxb.com", "bossssss.com", "isaostar.com", "pointredeem.com", "myfulfillmentproject.com", "toikawai.com"]}
Yara Overview |
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PCAP (Network Traffic) |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security |
Dropped Files |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security |
Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 31 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Click to see the 15 entries |
Sigma Overview |
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System Summary: |
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Sigma detected: Execution from Suspicious Folder | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: Microsoft Office Product Spawning Windows Shell | Show sources |
Source: | Author: Michael Haag, Florian Roth, Markus Neis, Elastic, FPT.EagleEye Team: |
Sigma detected: Non Interactive PowerShell | Show sources |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Sigma detected: Suspicious Bitsadmin Job via PowerShell | Show sources |
Source: | Author: Endgame, JHasenbusch (ported to sigma for oscd.community): |
Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Found malware configuration | Show sources |
Source: | Malware Configuration Extractor: |
Multi AV Scanner detection for dropped file | Show sources |
Source: | Metadefender: | Perma Link | ||
Source: | ReversingLabs: |
Multi AV Scanner detection for submitted file | Show sources |
Source: | Virustotal: | Perma Link | ||
Source: | ReversingLabs: |
Yara detected FormBook | Show sources |
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Machine Learning detection for dropped file | Show sources |
Source: | Joe Sandbox ML: |
Machine Learning detection for sample | Show sources |
Source: | Joe Sandbox ML: |
Source: | Avira: | ||
Source: | Avira: |
Source: | File opened: | Jump to behavior |
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Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior |
Software Vulnerabilities: |
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Document exploit detected (process start blacklist hit) | Show sources |
Source: | Process created: |
Source: | Memory has grown: |
Source: | Code function: | 9_2_03021500 | |
Source: | Code function: | 28_2_004172E4 | |
Source: | Code function: | 28_2_00417D55 |
Source: | TCP traffic: |
Source: | TCP traffic: |
Networking: |
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C2 URLs / IPs found in malware configuration | Show sources |
Source: | URLs: |
Source: | HTTP traffic detected: |